The story revolves around Haruka Nanase, a boy who has always loved to be immersed in water, and to swim in it. Before graduating from elementary school, he participated in a swimming tournament along with his fellow swimming club members, Makoto Tachibana, Nagisa Hazuki, and Rin Matsuoka. After achieving victory, each of the boys went their separate ways.Time passed, and in the middle of their uneventful high school lives Rin appears and challenges Haruka to a match, showing Haruka his overwhelming power. Not wanting it to end like this, Haruka, gathers together Makoto and Nagisa once again and brings a new member named Rei Ryugazaki to create the Iwatobi High School Swimming Club in order to defeat Rin.

Free!: Eternal Summer -The Iwatobi Swim Club returns! As their third year begins, Haruka, Makoto and Rin are still swimming strong, but choosing plans for their futures loom, and as friends both new and old make their way into the picture, rivalries will take root once again. Will the team make it out stronger than before or sink under pressure?

Free!: Dive to the Future -Haruka, who is attending college in Tokyo, meets Asahi again and reawakens his memories from his middle school years, including those of Ikuya. Makoto is working toward a new dream while he is in Tokyo together with Haruka. Rin has an unexpected meeting in Sydney